Search for χ±1χ02→1ℓ+h(bb¯) + MET with Atlas at LHC Run 2

Abstract : The LHC 8 TeV Run 1 came out with a negative outcome for C1 N2 searches and exclusion limits of mC1,N2> 250 GeV for a massless LSP were set. Taking advantage of the increase in the center-of-mass energy and the luminosity compared with Run 1, we’re searching for C1N2 → 1 lep + h0(bb) + MET within ATLAS at LHC 13 TeV Run 2. In line with the b-jets in the final state, my ATLAS authorship project is on the b-jet identification. We studied the impact of several simulated scenarios for pixel dead modules, inspired from 2016 data quality flags, on overall b-tagging performance. In fact the pixel modules play a crucial role in tracks reconstruction and vertexing, hence it highly affect the b-jets identification and it is necessary to quantify the loss in performance for such scenarios. On the phenomenology side, we’re developing a new version of the SuSy Spectrum calculator “Suspect3” using the inverted bottom-up procedure from physical masses to constraint SUSY parameters in the Higgs and stop sectors.
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Conference papers
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http://hal.in2p3.fr/in2p3-01416125
Contributor : Danielle Cristofol <>
Submitted on : Wednesday, December 14, 2016 - 9:43:45 AM
Last modification on : Thursday, January 18, 2018 - 1:55:02 AM

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R. El. Kosseifi. Search for χ±1χ02→1ℓ+h(bb¯) + MET with Atlas at LHC Run 2 . Journées de Rencontre des Jeunes Chercheurs 2016, Dec 2016, La Pommeraie, France. ⟨in2p3-01416125⟩

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